Div C – High School
NC Essential Standards Alignment:
Chm.3.1, Chm.3.2, Science as Inquiry
See the National rules manual
Event Score Sheet:
National Event Page:
Participants must wear goggles, an apron or a lab coat and have skin covered from the neck down to the wrist and toes. Gloves are optional, but if a host requires a specific type, they must notify teams. Long hair, shoulder length or longer, must be tied back. Participants who unsafely remove their safety clothing/goggles or are observed handling any of the material or equipment in an unsafe manner will be penalized or disqualified from the event.
NC Only: 3. NC REGIONALS will only be focusing on parts 3.c (Qualitative Analysis), 3.d (Hairs and Fibers), 3.e (Chromatography) and 3.f ii, v, and vii (DNA, Splatters, and Blood). Other topics listed in the rules will not be covered at regionals, but MAY be covered at the state tournament. Additional questions may be asked on general lab safety and procedure and chemical and physical properties and common uses of the substances in part 3c. updated 9/6/2018
This is a Lab based event. Teams will be given a crime scenario which they will be asked to solve based on evidence they gather and test. Teams will then be asked to analyze the information they have gathered to identify a suspect and solve the crime.
Each team may bring any or all of the items listed as Recommended Lab Equipment for Division C Chemistry Events, posted on soinc.org, to use during this event and two stand-alone nonprogrammable, non-graphing calculators. Participants not bringing these items will be at a disadvantage. The supervisor will not provide them. Each participant may bring an 8.5” x 11” sheet of paper that may contain information on both sides in any form and from any source. Participants must wear goggles, an apron or a lab coat and have skin covered from the neck down to the wrist and toes. Gloves are optional, but if a host requires a specific type, they must notify teams. Long hair, shoulder length or longer, must be tied back. Participants who unsafely remove their safety clothing/goggles or are observed handling any of the material or equipment in an unsafe manner will be
penalized or disqualified from the event.
***SAFETY ISSUE*** In addition to OSHA approved chemical splash goggles with indirect vents, teams also MUST wear closed toed shoes, pants/skirts that cover legs to the ankle, AND a lab coat/apron that reaches below the knee or they will not be allowed to participate. Long hair must be tied back. In addition, any teams seen handling materials in an unsafe manner will be disqualified from the event.
Event Leaders will provide a proper lab environment, all evidence to be collected, additional equipment necessary to perform tests on the evidence, the official test and answer sheet.
High score wins. Points are earned for proper identification of evidence as well as analysis of the crime.
For NC Regionals ONLY, these sections will account for the following approximate percentages of the final score: Part A, 35%, Part B, 20%, Part C 15% and Part E 30%.
Be sure to follow all safety requirements! Students will not be allowed to participate without the proper safety equipment.
– Event leaders will not answer questions on testing procedures (for example- how to perform a burn test on fibers) nor will they provide a copy of the rules or a list of the possible unknowns. Teams should already know procedure, and should include a list of the possible unknowns in their allowed notes if they cannot remember. Event leaders WILL answer safety questions, and stop students from performing a test in an unsafe manner.
General sites on Forensics and Crime Busters
Forensic checklist of links, activities, and notes
Real World—Articles on aspects of crime scene data collection
Links to forensic activities for students
Polymers and Fibers:
American Chemistry—Teaching Plastics
Microscopic Images of Fibers—search for the types of fibers and select the kind of microscopic technique for the image you want.
Animal Hair Images
Shoe and Tire Prints
Lab activity on shoe and tire prints
2014 State Forensics Test – powders, tool marks/impressions, firearms/ballistics
2010 Regional Forensics Test- Stolen Steelers
2010 Crimebusters Regional Test
2013 Crimebusters State Test
2014 Crimebusters State Test
How to do a Fiber Burn Test
How to do Identify Polymers
How to perform powder tests
More Powder Tests
Teamwork is key to this event